You know, I was thinking. . .
Back in Gen 4, they had all these Dragon Tamers, but they didn't have very many Dragon Types they were taming.
In the generations since then, they've been adding a BUNCH of new Dragon Types, but we haven't seen Dragon Tamers since then.
Now we're hitting Gen 7 and we're getting the biggest pile of Dragon Types I've seen yet.
Now granted, we haven't seen most of the Trainer types yet and if Gen 7 is taking cues from Sinnoh then we could easily see them back. But at this point it seems like it would almost be a waste to not have them back.
Heck, they should offer Dragon Tamer themed trainer outfits for you to dress up in. Or even better, all of the NPC class outfits on top of the normal individual clothes you can buy. Let us theme ourselves after NPCs the way we used to appear to people we communicated with in Gens 4-5, only with our own custom hair, skin, and eyes.
*EDIT* Wait, did we have Dragon Tamers in ORAS? Darnit, I forgot. But they can't exactly increase the Dragon pool in a remake, and other than one pair of version exclusive Gym Leaders with one graduating to Champion there was a bit of a significant gap.